All categories

3 years ago

PLEASE HELP ME PLEASE LOL Solve for x and y. Round your answers to the nearest tenth.

Mathematics

2 answers:

trasher [3.6K]3 years ago

4 0

Answer:

Step-by-step explanation:

Pachacha [2.7K]3 years ago

4 0

Answer:

x ≈ 6.6, y ≈ 13.3

Step-by-step explanation:

Using the tangent ratio in the right triangle to find x

tan30° = $\frac{opposite}{adjacent}$ = $\frac{BC}{AB}$ = $\frac{x}{11.5}$ ( multiply both sides by 11.5 )

11.5 × tan30° = x , then

x ≈ 6.6 ( to the nearest tenth )

Using the cosine ratio in the right triangle to find y

cos30° = $\frac{adjacent}{hypotenuse}$ = $\frac{AB}{AC}$ = $\frac{11.5}{y}$ ( multiply both sides by y )

y × cos30° = 11.5 ( divide both sides by cos30° )

y = $\frac{11.5}{cos30}$ ≈ 13.3

You might be interested in

What is the factor form of the polynomial X2-12+27

Oksanka [162]

Answer:

(x-9) (x-3)

Step-by-step explanation:

x^2 -12x +27

What 2 numbers multiply to 27 and add to -12

-9* -3 = 27

-9-3 = -12

(x-9) (x-3)

7 0

2 years ago

Please help!! I will brainlest your right answer please!!! I am stuck very badly!! Please

creativ13 [48]

Answer:

See below.

Step-by-step explanation:

2a. E = 8.25h + 1.2n

2b. E = 8.25 * 3.5 + 1.2 * 10 = $40.88

2c. 8.25 * 8 + 1.2n = 91.2

66 + 1.2n = 91.2

1.2n = 25.2

n = 21 magazines.

4 0

3 years ago

Read 2 more answers

Riley rakes 1/6 of a lawn in 2/3 hour. How many lawns can Riley rake per hour?

Butoxors [25]

Answer:

Riley rakes 1/4 of the lawns per hour.

Step-by-step explanation:

It is given that,

Riley rakes 1/6 of a lawn in 2/3 hour.

We need to find how many lawns can Riley rake per hour.

In 2/3 hour Riley rakes 1/6 of a lawn

In 1 hour Riley rakes $\dfrac{1}{6}\times \dfrac{3}{2}=0.25$ = 1/4 of a lawn.

Hence, Riley rakes 1/4 of the lawns per hour.

4 0

2 years ago

When the volume of a gas is

Fudgin [204]

Answer: The initial volume is 593.76mL

Step-by-step explanation:

As you do not say anithing about the pressure, i guess that the pressure remains constant.

If the gas is an ideal gas, we have:

P*V = n*R*T

where P is pressure, n is number of moles and R is a constant.

Now, initially we have:

P*Vi = n*R*315°C

finally we have:

P*825mL = n*R*452°C

Now we can take the quiotient of those two equations and get:

(P*Vi)/(P*852mL) = (n*R*315°C)/( n*R*452°C)

Now we have:

Vi/852mL = 315/452

Vi = (315/452)*852mL = 593.76mL

So when we expand the gas at constant pressure, we increase the temperature.

3 0

3 years ago

Part A

Nat2105 [25]

Answer:

A. $f(n) =0.2n+4.8$

B. The y intercept is 4.8

Step-by-step explanation:

Given

$a_n= 5 + 0.2(n-1)$

Solving (a): Write as a function.

To do this, we simply substitute f(n) for $a_n$

$a_n= 5 + 0.2(n-1)$ becomes

$f(n)= 5 + 0.2(n-1)$

Open Bracket

$f(n) = 5 + 0.2n-0.2$

Collect Like Terms

$f(n) =0.2n-0.2 + 5$

$f(n) =0.2n+4.8$

B. The y intercept.

To get the y intercept, we set n to 0

i.e

$f(0) =0.2 * 0+4.8$

$f(0) =0+4.8$

$f(0) =4.8$

Hence, the y intercept is 4.8

4 0

2 years ago